Results 11 to 20 of about 4,608 (217)

Environmental DNA‐based methods detect the invasion front of an advancing signal crayfish population [PDF]

Environmental DNA, 2022
Aquatic invasive species, such as the signal crayfish (Pacifastacus leniusculus), present a major threat to freshwater ecosystems. However, these species can be challenging to detect in recently invaded habitats.
Jack A. Greenhalgh, Rupert A. Collins, Duncan E. Edgley, Martin J. Genner, Jan Hindle, Gareth Jones, Lesley Loughlin, Maire O’donnel, Michael J. Sweet, Richard W. Battarbee   +9 more
doaj   +2 more sources

Introduced alien signal crayfish (Pacifastacus leniusculus) in Finland − uncontrollable expansion despite numerous crayfisheries strategies [PDF]

Knowledge and Management of Aquatic Ecosystems, 2018
In Finland, massive signal crayfish introductions started towards the end of 1980s, with an estimated total of 2.2 million signal crayfish been stocked before year 2016.
Ruokonen Timo J., Sjövik Rosanna, Erkamo Esa, Tulonen Jouni, Ercoli Fabio, Kokko Harri, Jussila Japo   +6 more
doaj   +2 more sources

Daily activity rhythms, chronotypes, and risk-taking behavior in the signal crayfish. [PDF]

Curr Zool, 2022
Abstract Consistent inter-individual differences in daily activity rhythms (i.e., chronotypes) can have ecological consequences in determining access to food resources and avoidance of predators. The most common measure to characterize chronotypes in animals as well as humans is the onset of activity (i.e., early or late chronotypes).
Sbragaglia V, Breithaupt T.
europepmc   +6 more sources

Diet and trophic niche of the invasive signal crayfish in the first invaded Italian stream ecosystem [PDF]

Scientific Reports, 2021
The occurrence of the signal crayfish Pacifastacus leniusculus in the Valla Stream was the first established population of this invasive species recorded in an Italian stream ecosystem.
Fabio Ercoli, Daniela Ghia, Laura Gruppuso, Gianluca Fea, Tiziano Bo, Timo J. Ruokonen   +5 more
doaj   +2 more sources

Modulation of endogenous antioxidants by zinc and copper in signal crayfish (Pacifastacus leniusculus). [PDF]

Chemosphere, 2021
Metal pollution is a long-standing concern and bioindicators are commonly used in ecotoxicological studies to monitor impacted wildlife populations for evidence of sublethal effects. Significant variation in the response of common biomarkers to metals is reported across taxa, thus necessitating careful characterization in model organisms. In this study,
Gunderson MP, Boyd HM, Kelly CI, Lete IR, McLaughlin QR.   +4 more
europepmc   +3 more sources

Cryptic asymmetry: unreliable signals mask asymmetric performance of crayfish weapons [PDF]

Biology Letters, 2012
Animals commonly use their limbs as signals and weapons during territorial aggression. Asymmetries of limb performance that do not relate to asymmetries of limb size (cryptic asymmetry) could substantially affect disputes, but this phenomenon has not been considered beyond primates.
Michael J. Angilletta, Robbie S. Wilson
openalex   +7 more sources

Integrated Biomarker Response in Signal Crayfish Pacifastacus Leniusculus Exposed to Diphenhydramine

SSRN Electronic Journal, 2022
Diphenhydramine (DPH) is a pharmaceutical with multiple modes of action, primarily designed as an antihistamine therapeutic drug. Among antihistamines, DPH is a significant contaminant in the environment, frequently detected in surface waters, sediments, and tissues of aquatic biota.
Tuyen Van Nguyen, Adam Bořík, Josef Velíšek, Antonín Kouba, Vladimír Žlábek, Anna Koubová   +5 more
openalex   +3 more sources

Better Alone Than in Bad Company: Trophic Ecology of Co‐Occurring Invasive and Native Crayfish [PDF]

Ecology and Evolution
The North American signal crayfish, Pacifastacus leniusculus, is one of the most successful invasive crayfish species in Europe. Its broad trophic niche and ability to exploit various food sources across different trophic levels, coupled with the spread ...
Daniela Ghia, Gianluca Fea, Annagiulia Murtas, Martina Ventimiglia, Tiziano Bo, Andrea Basso, Tobia Pretto, Roberto Sacchi, Fabio Ercoli   +8 more
doaj   +2 more sources

Phylogeographic insights into the invasion history and secondary spread of the signal crayfish in Japan. [PDF]

Ecol Evol, 2016
AbstractSuccessful invasion by nonindigenous species is often attributed to high propagule pressure, yet some foreign species become widespread despite showing reduced genetic variation due to founder effects. The signal crayfish (Pacifastacus leniusculus) is one such example, where rapid spread across Japan in recent decades is believed to be the ...
Usio N, Azuma N, Larson ER, Abbott CL, Olden JD, Akanuma H, Takamura K, Takamura N.   +7 more
europepmc   +4 more sources

Impacts of the North American signal crayfish (Pacifastacus leniusculus) on European ecosystems. [PDF]

Environ Sci Eur, 2015
As a vector of the crayfish plague (Aphanomyces astaci), invasive crayfish pose a major threat to endemic crayfish species in Europe. But do they affect whole ecosystems and fish species as well? A comprehensive review was done using online search engines on current literature to elucidate possible crayfish effects.
Vaeßen S, Hollert H.
europepmc   +5 more sources